Product entry to Bigcommerce website

We have a Bigcommerce website supplying automotive parts and accessories. We need someone to input products. The products are in several csv files from different suppliers and most have variant types etc… This could be a long term opportunity as we are constantly joining more suppliers as dealers and therefore uploading more products. Most csv files are in the 2-3000 product range and you would need to work with us to sort them into the best variant/ option combinations